Enhancing the activity of metal-organic nanosheets for oxygen evolution reaction by substituent effects.

Autor: Pang W; School of Chemistry and Pharmacy Science, Guangxi Normal University, Guilin 541004, P. R. China., Shao B; School of Chemistry and Pharmacy Science, Guangxi Normal University, Guilin 541004, P. R. China., Chen X; School of Chemistry and Pharmacy Science, Guangxi Normal University, Guilin 541004, P. R. China., Gu QX; School of Chemistry and Pharmacy Science, Guangxi Normal University, Guilin 541004, P. R. China., Yang FJ; College Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510275, PR China. Electronic address: yangfujie580@163.com., Li S; School of Chemical Engineering and Resource Recycling, Wuzhou University, Wuzhou 543002, PR China. Electronic address: lsx1324@163.com., Huang J; School of Chemistry and Pharmacy Science, Guangxi Normal University, Guilin 541004, P. R. China.. Electronic address: huangjin@mailbox.gxnu.edu.cn.
Jazyk: angličtina
Zdroj: Journal of colloid and interface science [J Colloid Interface Sci] 2022 Feb 15; Vol. 608 (Pt 1), pp. 306-312. Date of Electronic Publication: 2021 Sep 23.
DOI: 10.1016/j.jcis.2021.09.115
Abstrakt: Rational designing and synthesizing highly efficient oxygen evolution reaction (OER) electrocatalyst plays a key role in energy conversion. However, due to the numerous factors affecting the activity of electrocatalysis, the understanding of their catalytic mechanism is insufficient, and challenges still exist. Herein, the organic group of the metal-organic nanosheets electrocatalyst was replaced by NH 2 to CH 3 to controllable regulate the catalytic performance of OER, corresponding to the overpotential of OER reducing from 385 mV to 318 mV at 10 mA cm -2 , superior to the commercial precious metal based catalyst RuO 2 . Furthermore, combining the density functional theory (DFT) and electron localization function (ELF) indicates that the type of ligands group can indirectly modulate the electronic structure of metal catalytic center and the degree of electronic localization of the metal-organic nanosheets catalysts, resulting in the change in electrocatalytic activity. This simple catalytic model is more favorable to investigate the catalytic mechanism, providing a new strategy for the development of efficient electrocatalyst.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2021. Published by Elsevier Inc.)
Databáze: MEDLINE
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